TY  - JOUR
AU  - Silva, Fernando C.
TI  - An additive inverse characteristic polynomial theorem
JO  - Portugaliae mathematica
PY  - 1990
SP  - 403
EP  - 409
VL  - 47
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1990__47_4_115728/
LA  - en
ID  - PORMA_1990__47_4_115728
ER  -